check this for mixing animation files on one - https://github.com/nilooy/character-animation-combiner
definetely make sure animation track names match code.
If anybody is interested in development of the game map - here are the blender project files on dropbox. Idea that blender created object files can contain textures does not work. Prolly need to "hardcode them in the javascript" part.
https://www.dropbox.com/s/dirnbh3zfo39bfh/outside_the_box.zip?dl=0
Any tips write to r.mazitis@gmail.com or hit me on twitter @lv88h